Definition: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Input: Context: Polystachya kupensis is a species of plant in the Orchidaceae family. It is endemic to Cameroon. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)OfficeHolder, 3)Album, 4)Athlete, 5)NaturalPlace

1